View source for Actaea

{{Treatment/ID
|accepted_name=Actaea
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 504. 175
}}, {{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 222. 1754
|year=1754
}}
|common_names=Baneberry;necklaceweed;cohosh;actée
|basionyms=
|synonyms=
|hierarchy=Ranunculaceae;Actaea
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ranunculaceae]]</div><div class="higher-taxon"><small>genus</small>[[Actaea]]</div></div>
|etymology=Greek, aktea, ancient name for the elder, probably for leaf similarity
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, from caudices ca. 1 cm thick. <b>Leaves</b> cauline, alternate, petiolate. <b>Leaf</b> blade 1-3-ternately or -pinnately compound; leaflets ovate to narrowly elliptic, unlobed to 3-lobed, margins sharply cleft, irregularly dentate. <b>Inflorescences</b> terminal or axillary, 25(-more)-flowered racemes, 2-17 cm; bracts leaflike, sometimes present between leaves and inflorescence, bracteoles 1-2, at base of each pedicel, not forming involucre. <b>Flowers</b> bisexual, radially symmetric; sepals not persistent in fruit, 3-5, whitish green, plane, orbiculate, 2-4.5 mm; petals 4-10, distinct, cream colored, plane, spatulate to obovate, clawed, 2-4.5 mm; nectary absent; stamens 15-50; filaments filiform; staminodes absent between stamens and pistils; pistil 1, simple; ovules many per pistil; style very short or absent. <b>Fruits</b> berries, solitary, sessile, broadly ellipsoid to nearly globose, sides smooth; beak a wart, terminal, to 1 mm. <b>Seeds</b> dark brown to reddish brown, obconic to wedge-shaped, rugulose. <b>x</b> = 8.</span><!--

-->{{Treatment/Body
|distribution=Temperate to cool forests throughout Northern Hemisphere.
|discussion=<p>Species ca. 8 (2 in the flora).</p><!--
--><p>The two species in North America are similar to each other vegetatively and differ primarily in flower and fruit characteristics.</p>
|tables=
|references={{Treatment/Reference
|id=hulten1971a
|text=Hultén, E. 1971. The circumpolar plants. II. Dicotyledons. Kongl. Svenska Vetenskapsakad. Handl., ser. 4, 13: 1-463.
}}{{Treatment/Reference
|id=keener1977a
|text=Keener, C.S. 1977. Studies in the Ranunculaceae of the southeastern United States. VI. Miscellaneous genera. Sida 7: 1-12.
}}{{Treatment/Reference
|id=pellmyr1985a
|text=Pellmyr, O. 1985. The pollination biology of Actaea pachypoda and A. rubra (including A. erythrocarpa) in northern Michigan and Finland. Bull. Torrey Bot. Club 112: 265-273.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Pedicel in fruit bright red, stout, (0.7–)0.9–2.2(–3) mm diam., ± as thick as axis of raceme; stigma at anthesis as broad as or broader than ovary, 1.5–2.8 mm diam. in flower and fruit; petals truncate or cleft, often antherlike at apex; berries white, very rarely red.
|[[Actaea pachypoda|Actaea pachypoda]]
|-id=key-0-1
|1
|Pedicel in fruit dull green or brown, slender, 0.3–0.7 mm diam., thinner than axis of raceme; stigma at anthesis narrower than ovary, 0.7–1.2 mm diam. in flower and fruit; petals acute or obtuse, not cleft or antherlike at apex; berries red or white.
|[[Actaea rubra|Actaea rubra]]
|}
</div></div><!--

-->{{#Taxon:
name=Actaea
|author=
|authority=Linnaeus
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Ranunculaceae
|distribution=Temperate to cool forests throughout Northern Hemisphere.
|reference=hulten1971a;keener1977a;pellmyr1985a
|publication title=Sp. Pl.;Gen. Pl. ed.
|publication year=;1754
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V3/V3_1120.xml
|genus=Actaea
}}<!--

-->[[Category:Treatment]][[Category:Ranunculaceae]]